The thing that made it unexpected in my case is that “borders” is an English word and was not previously known to me as a name. I was surprised and amused when

The thing that made it unexpected in my case is that “borders” is an English word and was not previously known to me as a name. I was surprised and amused when I learned it was an eponym. That puts it in the same category as the other examples on this site, at least from my perspective. Am I being detained, Mr. Policeman?